Home / 15,411.33-21,267.39-8,605.00

Finding the Fourth Proportional to 15,411.33, 21,267.39 and 8,605.00

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Solution

The fourth proportional to 15,411.33, 21,267.39 and 8,605.00 is: 11,874.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.33 : 21,267.39 = 8,605.00 : x
  2. Step 2: Convert to fraction form
    15,411.33/21,267.39 = 8,605.00/x
  3. Step 3: Cross multiply
    15,411.33x = 21,267.39 × 8,605.00
  4. Step 4: Simplify right side
    15,411.33x = 183,005,949.80
  5. Step 5: Solve for x
    x = 183,005,949.80/15,411.33
  6. Step 6: Final answer
    x = 11,874.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.